Side by side
Aera Instruments M-1vsBeaucroft Watches Penfold
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
8 of 29 specs differDiameter
M-139mm
Penfold39.5mm
Power Reserve
M-142h
Penfold42h
Water Resistance
M-1100m
Penfold200m
MSRP
M-1—
Penfold—
Full specifications
Case
4 specsDiameter
39mm
39.5mm
Thickness
13.14mm
11.6mm
Lug-to-Lug
47.6mm
46.5mm
Water Resistance
100m
200m
Crystal & Dial
2 specsDial Color
Dune
—
Lume
Super-LumiNova
None
Movement
2 specsCaliber
Sellita SW216-1
Miyota 9039
Type
Manual
Automatic
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